Reinforcement for concrete columns.



.a reinforcement of the kind described, which UNITED sTATEs PATENT curio QWILLIAM ARTHUR COLLINGS, OF KANSAS' CITY, MISSOURI.

REINFORCEMENT FOR CONCRETE'COLUMNS.

Specification of Letters Patent.

Patented Aug. 6, 1918.

` Application filed August 13, 191'?.Y Serial No. 185,876.

is economical to manufacture, which has great strength, which may be readily molded in a column ofconcrete, and which may be quickly collapsed to compact form for storage and shipment.'

The novel features of my 'invention are hereinafter fully described and claimed In the accompanying drawing, which illustrates my invention,

Figure l is a side elevation of a portion of a concrete column provided with the preferred embodiment f of my invention.

Fig. 2; is ajtop view of the reinforcement shown in Fig. 1.

Fig. 3 is a side elevation, partly broken away, of a portion of the reinforcing means shown in Fig. 1, enlarged.

Fig. 4 is a cross section on the line 4-4 of Fig. 3.

Fig. 5 is a side elevation of the reinforcing means shown in Fig. 1, shown collapsed.

Fig. 6 is aside elevation, partly broken away, showing a modification of my invention.

Fig. 7 is a cross section on the line 7-7 of 6.

Fig.A 8 is a top view, partly in horizontal section, of another modified form of my in- Vention. .1

Similar reference characters 'designate similar parts in the different views.

1 designates an upright wire spiral, the coils of Which are, preferably, inclined slightly to the horizontal.

. A plurality of upright reinforcing means are preferably employed for spacing the coils of the spiral at different points.

Each reinforcing means is, prefereably, T-shapcd in cross section, and as they are alike, a description of one will suffice for each of the reinforcing means shown in Figs.

2 and 3 designate respectively two upright flat bars disposed at right angles to each other, the bar 2 forming the stem of the T and the bar 3 the head thereof.

The bar 2 is provided, preferably, in the edge adjacent to the bar 3 with a plurality of openings or notches 4 in which the coils 1 of the spiral are preferably pivotally mounted.

A plurality of securing devices 5 consisting preferably of short pieces of wire embrace the inner edge and opposite sides of the bar 2 and extend through openings provided therefor in the barA 3, the ends of each securing device 5 being secured to the outer I side of the bar 3, preferably by being Vleent parallel therewith.

The securing devices 5 preferably respectively embrace the upper and lower sides of the coils l, thereby holding the bars 2 and 3 against longitudinal movement relatively to each other.

By sliding the reinforcing means to opposite sides of the spiral, the latter may be collapsed, as shown in Fig. 5.

When the spiral is disposed in the operative position, shown in Fig.`1 the reinforcement may be readily molded in concrete 6.

By disposing the bars 2 and 3 at right angles to each other, with the bar 3 at the outer sideA of the spiral, and the bar 2 disposed radially with respect to the spiral, great rigidity and strength is afforded to the reinforcement.

In the form of my invention shown in Figs. 6 and 7, a reinforcing bar 2, similar to that shown in Fig. 1 is employed. In lieu of the bar 3, I provide an upright fiat bar 7, disposed at right angles to the barv2, so as to form, in cross section, a T. The inner side of the bar 7 is provided with a plurality of transverse grooves 8, which are disposed respectively in register with the openings or notches 4- so as to receive therein the wire securing devices 5, which engage the bars 2 and 7 and coils 1, as described with reference to the securingdevices 5 employed in the form shown in Fig. 1.

IThe mode of operation of the form shown in Figs. 6 and 7 is the same as that shown in the preceding figures.

Inthe form of my invention shown in Fig. 8, the construction is the same as that shown in Figs. 1 to 5, with the exceptipn that there is substituted for the vertical spacing bar 3, an upright spacing bar t) which is disposed at right angles to the bai' 2, so as to form in cross section a T. The bar 9 has punched from its opposite vertical edges` respectively, a plurality of inwardly extending tongues lt), which respectively en'lbrace opposite sides of the bar 2,'

thereby firmly holding the latter from lateral n'iovenient relatively to the bar t). The securing devices 5 are extended through the openings provided in the bar t) in the formation of the tongues 1t) and, as in the form Shown in Fig. l, the securing devices re Spcctively embrace the upper and lower sides of the coils 1, and have their outer ends bent parallel with and disposed against the .outer side ot the spacing bar 9.

I do not limit my invention to the structures shown and described, as various modiications, within the scope of the appended claims, may be made without departing from the spirit ot my invention.

l. A reinforcement for concrete columns` comprising an upright wire spiral, two up- Vright bars disposed at right; angles to each i through which theI coils ot' the spiral.|'e- `Speetlvely extend, and securing devices respectively embracing said coils and one edge and two sides ot the bar having said openings and extending through and secured to the other bar.

A reinlorcemcnt; Vlor concrete columns -connfirising a collapsible upright wirc spiral,

two upright ba rs disposed at right angles to each other, one ot the hars having openings in which the coils ol' the spiral are respcc` tivcly'pivotally mounted, and reinl'orcing devices respectively intermediate of said coils and embracing one edge and two sides oi' the bar having said openings and. extending through and secured to the other bar.

4. A reinforcement for concrete columns comprising a collapsible upright; wire spiral, two upright` bars disposed at right angles to cach other, one ot'tlie bars having openings in which the, coils ol the spiral are respectively pivotally mounted, and reinforcing devices respectively embracing said coils aml one edgeland two sides oi' the har having said openings and extending through and ,secured to the other bar.

5. A. reinforcemeut vlor concrete columns comprising an uprightl wire spiral, two upright', bars, one having notches in one edge which respectively contain the coils ot' the spiral, tlie other bar extending across said not-ches and closing the same, and means for securing said bars togethe' and t'or holding themv against relative longitudinal movement.

t3. A. reinforcement; i'or concrete columns comprising an upright wire spiral, two npright bars, each having notches cooperating with the notches in the other bar tor holding` the coils olI the spiral, and means l'or securing the bars together.

7. A reinlorcement; lor concrete columns comprising an upright wire spiral.ftwo up rigl|t-bars, one olA the bars being disposed edgewise to the llat side ot' the other bar, said other bar having transverse grooves eooperalfing willi edge grooves provided iu the opposite bar lor receiving tllc coils ol' the spiral, and means t'or securing said bars together.

t. A reintorcemcnt, t'or concrete columns comprising au uprighty wire spiral. two upright bars, one` having an edge disposedl against the llat sidc'olI the other, said edge having notches cooperating with transverse grooves in tluI opposite bar lor receiving the coils olI the spiral, and securing devices 'cach embracing one ol' tliecoils and both oll .said hars l'or holding the bars together.

lu testimony whcrcot l have signed my name to this spccilicatton, 

